Oligosaccharides chitin-derived

Uragami T (2010), Separation membranes from chitin and chitosan derivatives. In Chitin, Chitosan, Oligosaccharides andTheir Derivatives Biological Activities and Applications, Ed. by Kim S K, CRC Press, Taylor Francis Group, pp. 481-506. 

Sephadex LH-20 methanol peracetylated derivatives of chitin oligosaccharides 92... 

Kim, S. K. (2010). Chitin, Chitosan, Oligosaccharides and Their Derivatives Biological Activities and Applications. CRC Taylor Francis, USA (pp. 666). 

Mathesius U, Schlaman FIRM, Spaink PIP, Sautter C, Rolfe BG, Djordjevic MA. 1998. Auxin transport inhibition precedes root nodule formation in white clover roots and is regulated by flavonoids and derivatives of chitin oligosaccharides. Plant J 14 23-34. 

The interdependence of methyl jasmonate with chitin- and chitosan-derived elicitors was studied using plant cell suspension cultures of Taxus canadensis. Induction of the biosynthesis of paditaxel and other taxanes was enhanced when methyl jasmonate and elicitors were added 8 days after culture transfer compared to treatments in which only methyl jasmonate or only elicitor was added. The optimal elicitor concentration using AT-acetylchitohexaose was 0.450 pM, but only in the presence of methyl jasmonate. Little, if any, induction of taxane formation occurred with the oligosaccharide alone. The optimal methyl jasmonate concentration was 200 pM using colloidal chitin or oligosaccharides of chitin and chitosan as elicitors. 

On the other hand, the impact of ethylene in the composition of headspace gases fed to Taxus sp. cultures was very evident. The positive involvement of ethylene was also noted when cultures were elicited with both dissolved and volatilized methyl jasmonate and with chitin- and chitosan-derived oligosaccharides. The effect of the latter compounds on biosynthesis of ethylene by the plant cell cultures brings us to a better understanding of the interdependence of elicitor and hormone concentrations and of cross-talk signal transduction in plants. 

Oligosaccharides derived from chitin are also very effective promoters of its synthesis in most particulate preparations, possibly by a combination of priming and allosteric activating effects as might be expected, their influences... 

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